Safefty appliance for elevators.



H. G. GUFPEY. SAFETY APPLIANCE FOR ELEVATORS.

APPLICATION FILED JULY 18, 1913.

@uuemtoz Patented Jan. 12, 1915.

2 SHEETS-SHEET 1.

THE NoRre/S PETERf: CG" PHOI'GLITHII, WASHINGTON 0. C.

H. C. GUFPEY.

SAFETY APPLIANCE FOR ELEVATORS.

APPLICATION FILED JULY 18, 1913.

Patented Jan. 12, 1915.

2 SHEETS-SHEET 2.

amila Leases HENRY CLAY GUFFEY, 0F HEREIN, ILLINOIS.

SAFETY APPLIANCE FOR ELEVATORS.

Specification of Letters Patent.

Patented Jan. 12, 1915.

Application filed July 18, 1913. Serial No. 779,689.

To all whom it may concern Be it known that I, HENRY CLAY GUTFEY, a citizen of the United States, residing at Herrin, in the county of Williamson and State of Illinois, have invented certain new and useful Improvements in Safety Appliances for Elevators, of which the following is a specification.

This invention relates broadly to elevators and more particularly to safety appliances which are especially adapted for use in connection with elevator cages and has for its primary object to provide a novel and useful form of safety catch for automatically retarding the movement of the cage when tension is released from the elevating element due to breakage or the like.

Another object of this invention is to provide a safety appliance which is slidably mounted in the elevator cage, one end thereof extending beyond the upper end of the cage, and having engagement with a power element which is used for elevating the cage in the shaft, the opposite end of the appliance extending below the cage, being in engagement with suitable catches which are thrown laterally beyond the sides of the cage into engagement with the curbing of the shaft when tension is released from the upper end of the appliance as by the breaking of the cables or the like which are engaged therewith and the power element.

A further object of the invention resides in a peculiar formation of top or cover for the cage, which is detachably associated therewith and has formed thereon a suitable element which engages with the one end of the safety appliance, when the same is operated in the cage, for limiting the movement thereof.

Other objects as well as the nature, characteristic features and scope of my invention will be more readily understood from the following description taken in connection with the accompanying drawings and pointed out in the claims forming a part of this specification.

Referring to the drawings :F igure 1 is a transverse longitudinal sectional view of my improved device showing the relative positions of the safety appliance, the one being shown in dotted lines. Fig. 2 1s a sectional view taken through the longitudinal center of my improved device disclosing the connection of the cage with the elevator shaft, one of the safety catches being shown in elevation.

In the drawings wherein is illustrated the preferred form of my invention in order to properly illustrate the application of the same, a shaft curbing 5 is provided which is made of a suitable penetrable material preferably wood, and has arranged on two of the opposite sides thereof vertical guide bars 6.

My improved cage comprises a base portlon, which is made of a rectangular metal frame 7, being of such a dimension as to be freely operable in the elevator shaft, and has extending therefrom a plurality of standards 8, a pair of which are arranged on two of the opposite sides of the rectangular member 7, said rectangular member having likewise extending upwardly therefrom vertical channel irons or shoes 9 which are slidably engaged with the vertical guides 6. The standards 8 and the shoes 9, are secured at the upper end to a pair of horizontal bars 10, the horizontal bars being supported by the channel irons or shoes 9. Rigidly secured to the standards 8 are side plates 11, each of which has connection adjacent its lower end to a platform 12, as shown to advantage in Fig. 2 of the drawings. The platform 12 may be made of wood, metal or any suitable material and is secured to the sides 11 in any suitable mannor as desired. Each of the sides 11 has formed on the outer face thereof a loopstrap 13, which is slidably engaged with the outer face of the channel shoes 9, the loopstraps 13 being for the purpose of facilitating the operating of the sides 14 of the safety appliance.

The safety appliance in the present instance comprises the sides 14 heretofore mentioned, the upper ends of which are olfset as indicated at 15, and the terminals of the offset portion engaging with a horizontal bar 16. The opposite ends of the sides 14 are in engagement with a pair of links 17, the links being pivotally engaged with arms 18, and the arms in turn pivotally engaged with the rectangular frame 7. Each of the arms 18 has an ear 19 formed thereon through which is formed an aperture for engagement with a pivot pin, said arms 18 being deflected and extended downwardly from the ears 19, said extended ends having arranged thereon catches 20 which are shown in the present instance to comprise fact that the spring 25 is constantly under segmental blocks, the curved face of each tension while pressure is exerted on the of which has formedthereon a plurality of cable 31. The teeth 21 which are formed teeth or spurs 21. Arranged approximately on the segmental blocks 20' engage the sides 5 midway the ends of each of the segmental of the shaft so as to retard the course of 70 blocks 20 is a rod 22 which has formed on the cage, should the cable be accidentally the upper end thereof an eye 23, each of broken, the inward movement of the bar 16 the eyes 23 having engagement with a coil which forms the upper portion of the safety spring 25. Bridged between each of the appliance, being limited in its downward horizontal bars 10 and secured adjacent the course in View of the U-shaped elements 34, 75 opposite ends thereof is a yoke member 26 thereby preventing the turning of the segwhich has extending therefrom cables 27 mental'blocks 20 should undue pressure be the cables having engagement at the center exerted on the platform 12 during the acciof the cage at a point above the same, with dental descent of the cage. As soon as it is a ring 28. Secured to the horizontal bars desired torelease the cage from within the 80 16 of the safety appliance is an eye-bolt 29, elevator shaft, a suitable power element is the eye of which is engaged by the one end placed in engagement with the ring 28 so as of a cable 30, the opposite end thereof havto cause the elevation of the bar 16, this ing engagement with the ring 28. The ring operation disengaging the segmentalblocks 2 28 has engagement with the elevating elef o h p ra l Si s th r y 85 ment, in the present instance being shown allowing for the cage tobe readily operated as a cable 31, which is secured to a suitable again either in an upward or downward power element above the elevator shaft. course as desired, without the necessity of It is well known, that not only loads of changing any of the parts or repairing the coal, ore, etc., are carried on the platform shaft in any way, which very often has to be 90 12, but likewise animals and persons workdone in safety appliances now in use. When ing in the mines or the like, with which the the bar 16'is elevated as above stated, it is elevator shaft communicates, and with this obvious that the spring 25 is again placed in view I have devised an improved cover under tension, so as to automatically operfor the cage as indicated at 32 which comate the brakes 20, should the elevating cable 95 prises a pair of metallic plates, each of again be broken. which have secured to the bottom face there- It will be understood that the above deof straps 33, the straps being engaged with scription and accompanying drawings coma U-shaped element 3st, said element being prehend only the general and preferred emdepressed adjacent each end thereof as inbodiment Of my invention and that various 100 dicated at 35, the depressed portions 35 beminor changes in detail of construction, i di d, over a flange 36 which is proportionand arrangement of the parts formed on each of the horizontal bars 10, may be made within the scope of the apd h i engagement b th th fl ng pended claims and without sacrificing any 37, which are likewise formed on the hori- 0f h advantages of my invention. 105 t l b 10 t a i t above d i -1 Having thus fully described my inventering relation with that of said first mention, what I claim as new and desire tosetioned flanges. The object in providing the e by Letters Patent, is U h d member 34 hi h t d i 1. In combination with an elevator shaft, wardly toward the platform 12, is to proeg e y meunted in Said Shaft, e 110 vide a stop for limiting the movement of Safety PP y mounted n Said the horizontal bar 16 of the safety appliance, Wg the pp end thereof a ly lying when the pressure has been released from 111 Phme above that of the cage, cat h s th d i bl 31, as 11-, ill b Seen th t engaged with the lower end of said appliance the bar 16 descends and engages with the p d to he swung at rally into engage- 11.5 U-shaped members 34 as indicated b th mentwith said shaft when pressure is red tt d li i Fi 1, leased from the upper end of said appliance, I Operation th l d i l d on th said catches comprising segmental blocks, platform 12 f th g d th Same 1- teeth carried by said blocks, arms'pivotally lowed to be operated in the elevator shaft, engaged with said cage having one end in the ordinary manner, through th of each engaged with one of said blocks dium of the power element which is secured and the pp e end thereof in Piv al to the cable 31. If during either the de- Connection with the lower d of Said P- scent or ascent of the cage, the cable 31 is p i c means i po t een said 6 broken, it will be seen that the pressure is h S an having engagement therewith for released from the bar 16, thereby allowing forcing said blocks laterally beyond said the same to drop, which operation will cause g h n Pressure is released m h upthe segmental blocks 20 to be thrown outper end of said appliance, and U-shaped wardly into engagement with the penemembers depending from said cage for limit- 65 trable sides 5 of the shaft in view of the ing the movement of said appliance therein.

2. In combination with an elevator shaft having a pair of vertical guides, a cage, two opposite sides of which slidably engage said vertical sides, a safety appliance mounted for movement in said cage, said appliance comprising a pair of vertical bars, arms pivotally engaged to said vertical bars, and segmental blocks secured to the terminals of said arms, teeth formed on said segmental blocks for engagement, at times, with the sides of said elevator shaft, a horizontal bar connected to said vertical bars at the upper end thereof, an elevating cable engaging with said horizontal bar for normally holding the same beyond the upper end of the cage, a spring arranged between said segmental blocks, approximately midway the ends thereof for engaging said teeth with the sides of said shaft when tension is released from said horizontal bar and means for limiting the downward movement of said bar.

3. In combination with an elevator shaft having penetrable sides and a pair of vertical guides arranged on two of the sides, of a cage, a safety appliance for said cage including bars vertically slidable in said cage, a horizontal bar connecting said vertically slidable bars at their upper ends, an elevating cable connected with said horizontal bar, links pivotally carried by said vertical bars, arms, the one end of each of which is pivotally engaged with said links, ears formed adjacent the opposite end of each for pivotal engagement with said cage, a catch carried by each of the opposite ends of said arms, said catches comprising segmental blocks, and teeth arranged on said segmental blocks for engagement with said penetrable sides when tension is released from said elevating cable.

4. In combination with an elevator shaft, penetrable sides in said shaft, and a pair of vertical guides arranged on the two opposite sides of said shaft, of a cage, channel shoes arranged on two of the opposite sides of said cage and extending the entire length of the same for engagement with said vertical guides, a safety appliance slidably ar ranged in said cage, said appliance comprising a pair of vertical bars, a horizontal bar connecting said vertical bars at the upper ends thereof, an elevating cable con nected with said horizontal bar, links pivotally connected to said vertical bars at their lower ends, arms, the one end of each of which is pivotally engaged with one of said links, ears formed adjacent the opposite end of said arms for pivotal engagement with said cage, a catch carried by each of said arms, said catches comprising segmental blocks, teeth arranged on said segmental blocks, a spring extending transversally of said cage and having engagement with said catches midway the ends thereof for engaging said teeth in said penetrable sides when tension is released from said elevating cable, and means lying in the path of said horizontal bar for limiting its movement when tension is released therefrom.

5. In combination with a shaft having penetrable sides, of a cage comprising a frame, and a platform arranged in said frame adapted for transporting materials from one end of said shaft to the other, a safety appliance slidably mounted in said cage including vertical bars, arms pivotally carried by said vertical bars at the one end thereof, a horizontal bar connecting said vertical bars at the opposite ends thereof, an elevating cable secured to said horizontal bar for normally holding the same beyond the upper end of the cage, a segmental block carried by each of said arms, teeth formed on each of said blocks, said blocks normally lying within the plane of said cage, a spring arranged in said cage, the opposite ends thereof having engagement with said segmental blocks, for throwing the teeth thereof beyond the sides of the cage into en gagement with the penetrable sides of said cage when tension is released from said elevating cable, means lying beneath said horizontal bar in the path thereof, for limiting its downward movement thereof when tension is released from said elevating cable.

In testimony whereof I affix my signature in presence of two witnesses.

HENRY CLAY GUFFEY.

Witnesses:

J. D. GUFFEY, MAT THOMAS.

Goplea of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

